In Vitro Translation of mRNA in a Wheat Germ Extract Cell-Free System
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The in vivo competition of mRNAs for translation is more accurately represented, making the wheat germ system preferable for studying regulation of translation (1).
Particularly low levels of endogenous mRNA and the endogenous nuclease activity (10) obviate the requirement for treatment with a calcium-activated nuclease. There is, there fore, less disruption of the in vivo situation and contamination with calcium ions is less harmful. The identification of all sizes of exogenous mRNA-directed translation products is facilitated because of the low levels of endogenous mRNA present.
There is no posttranslational modification of translation products; primary products are therefore investigated, although processing may be achieved by the addition of microsomal membranes to the translation reaction.
KeywordsCreatine Kinase Wheat Germ Translation Product Translation System Microsomal Membrane